Now Europe loves Uber and Airbnb

Stop bullying Airbnb!

That's the message to Europe from the region's top regulator. Publishing new guidelines for the sharing economy on Thursday, the European Commission told officials to stop banning firms such as Airbnb and Uber.

Those services, and many more like them, contributed about 28 billion euros ($31 billion) to the European Union economy in 2015, with their revenues doubling in a year.

The Commission said that protecting existing business models, such as taxi companies, was not a valid reason to ban alternative services.

Elzbieta Bienkowska, Europe's senior official for industry and entrepreneurship, said such services were an opportunity, not a threat. An outright ban "should only be a measure of last resort," she told reporters.

Uber and others are becoming ever more popular in Europe. Polls show that one in six Europeans are already using them.

On top of that, almost a third of people who have used these services have also provided them -- more than 5% of the EU population, or roughly 25 million people.